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2024-07-17
10:12
Calibration of online luminosity measurement using VELO RetinaCluster counters at LHCb /LHCb Collaboration
Preliminary results of the calibration of the VELO RetinaCluster luminosity counters are presented. The calibration is performed using the online counters data, provided by the VELO TELL40 boards to the experimental control system (ECS), and the beam parameters provided by the LHC..
LHCB-FIGURE-2024-019.- Geneva : CERN, 2024 - 7. Fulltext: LHCb-FIGURE-2024-019 - ZIP; FIGURE-2024-019 - PDF;

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2024-07-17
10:08
BuSca: a Buffer Scanner at HLT1 to detect LLPs beyond the SM /LHCb Collaboration
A prototype algorithm for searches at the HLT1 level making use of the high degree of parallelisation in the new LHCb trigger scheme on GPUs is being developed. It is based on the reconstruction of downstream tracks, making candidates which are projected in 2D histograms of flight distance and mass hypotheses at 30 MHz. [...]
LHCB-FIGURE-2024-018.- Geneva : CERN, 2024 - 5. Fulltext: LHCb-FIGURE-2024-018 - ZIP; FIGURE-2024-018 - PDF;

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2024-07-17
09:50
Calorimeter performance $-\pi^0$ mass and $B^0$ mass from $B0\rightarrow K^{\ast}\gamma$ decay /LHCb Collaboration
$\pi^0$ mass reconstruction and $B^0$ mass reconstruction from the $K^{\ast}\gamma$ selection using 2024 data. The plots have been made from the 2024 data sample (Run 3) processed after the first ECAL calibration..
LHCB-FIGURE-2024-017.- Geneva : CERN, 2024 - 4. Fulltext: FIGURE_2024_017 - PDF; LHCb-FIGURE-2024-017 - ZIP;

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2024-07-17
09:27
SciFi Performance plots July 2024 /LHCb collaboration
Data plots as seen in the current monitoring, or extracted from. The average SiPM efficiency per layer, occupancy, and number of clusters are shown for Fill 9877..
LHCB-FIGURE-2024-016.- Geneva : CERN, 16 - 5. Fulltext: Figure-2024-016 - PDF; LHCb-FIGURE-2024-016 - ZIP;

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2024-06-04
16:48
Anomaly detection for a new trigger line for showers in the muon detectors /LHCb collaboration
To extend the sensitivity of LHCb to long-lived particles, predicted by multiple Standard Model extensions, we aim to use the muon detector as a sampling calorimeter to select showers. To trigger on such events, anomaly detection techniques are developed and their performances quantified. [...]
LHCB-FIGURE-2024-015.- Geneva : CERN, 04 - 12. Fulltext: LHCb-FIGURE-2024-015.plots - ZIP; LHCb-FIGURE-2024-015 - PDF;

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2024-05-28
16:20
B2OC hadronic triggers in Run 3 (TrackMVA and TwoTrackMVA) /LHCb Collaboration
Measurement of TrackMVA OR TwoTrackMVA efficiencies on some representative B2OC hadronic decay from 2024 data. $B_d \rightarrow D (\rightarrow K \pi \pi) \pi$ selection: PIDK of all $K$ $> 5$, of all $\pi$ $< 5$, B2OC Hlt2 generic $B$ hadron NN $>$ 0.9, IPCHI2 of all tracks from $D$ decay $> 6$, IPCHI2 for the $\pi$ from the $B_d$ decay $> 12$ and BPVFDCHI2 of the $D$ $> 80$. [...]
LHCB-FIGURE-2024-014.- Geneva : CERN, 2024 - 6. Fulltext: LHCb-FIGURE-2024-014.plots - ZIP; LHCb-FIGURE-2024-014 - PDF;

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2024-05-28
15:53
TwoTrackKs and TwoKs HLT1 lines invariant mass monitoring plots with early 2024 data /LHCb Collaboration
The documents presents invariant mass plots for $K^0_S$ and $K^0_S$ pairs candidates selected by TwoTrackKs and $TwoKs HLT1 lines on data collected by LHCb on early 2024 data taking..
LHCB-FIGURE-2024-013.- Geneva : CERN, 2024 - 4. Fulltext: LHCb-FIGURE-2024-013 - PDF; LHCb-FIGURE-2024-013.plots - ZIP;

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2024-05-28
15:41
Photon triggers for ultra-peripheral lead-lead collisions in Run 2 and Run 3 /LHCb Collaboration
We present distributions of photon pair candidates in low multiplicity lead-lead collisions using dedicated trigger algorithms implemented in 2018 and 2023 runs. These candidates are typically produced in photon-photon collisions, characterized by a strong angular correlation between the outgoing photons. [...]
LHCB-FIGURE-2024-012.- Geneva : CERN, 2024 - 5. Fulltext: LHCb-FIGURE-2024-012 - PDF; LHCb-FIGURE-2024-012.plots - ZIP;

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2024-05-28
15:35
Primary Vertex resolution with early 2024 data /LHCb Collaboration
This document presents the Primary Vertex resolution of the LHCb detector during the first months of data taking in 2024. Only runs with VELO half-alignment that meet the threshold of 5 $\mu$m in $T_x$ are considered. [...]
LHCB-FIGURE-2024-011.- Geneva : CERN, 2024 - 4. Fulltext: LHCb-FIGURE-2024-011 - PDF; LHCb-FIGURE-2024-011.plots - ZIP;

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2024-05-28
15:18
Charged PID performance in early 2024 data /LHCb Collaboration
This document presents the charged PID performance of the LHCb detector during the first months of data taking in 2024..
LHCB-FIGURE-2024-010.- Geneva : CERN, 2024 - 5. Fulltext: LHCb-FIGURE-2024-010 - PDF; LHCb-FIGURE-2024-010.plots - ZIP;

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